(1 point). Listen.
A patient has orthostatic hypotension.
Which activity will require close observation by the nurse? When the patient:.

Sleeps.

Exercises.

Sits down.

Stands up.

Answer and Explanation

The Correct Answer is B

Choice A rationale:

Sleeping is not a significant factor in orthostatic hypotension. When a patient is sleeping, they are typically lying down, and orthostatic hypotension is related to changes in posture, not during sleep.

Choice B rationale:

Exercising can exacerbate orthostatic hypotension because it increases the demand on the cardiovascular system. When a patient exercises, their heart rate and blood pressure can increase significantly. In the case of orthostatic hypotension, there's a risk of a more pronounced drop in blood pressure when transitioning to an upright position after exercise. Therefore, exercising requires close observation in these patients.

Choice C rationale:

Sitting down is a relatively stable position, and orthostatic hypotension primarily involves changes from a sitting or lying position to a standing position. Sitting down doesn't typically worsen orthostatic hypotension.

Choice D rationale:

Standing up is a crucial moment when dealing with orthostatic hypotension. When a patient with orthostatic hypotension stands up, there is a risk of a significant drop in blood pressure, which can lead to symptoms like dizziness or fainting. This is why standing up requires close observation. Now, let's move on to the next question.

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Correct Answer is C

Explanation

Choice A rationale:

Albumin and aldosterone. Rationale: Albumin and aldosterone are not typically used to diagnose myocardial infarction. These are not specific markers for cardiac injury. Choice A is incorrect.

Choice B rationale:

Sodium and potassium. Rationale: Sodium and potassium levels are important for assessing electrolyte balance, but they are not specific indicators of myocardial infarction. Choice B is incorrect.

Choice C rationale:

Creatine phosphate (CK-MB) and troponin 1. Rationale: Creatine kinase-MB (CK-MB) and troponin 1 are specific cardiac markers that are elevated in the blood following a myocardial infarction. CK-MB is an isoenzyme of creatine kinase found primarily in the heart, and troponin is a protein released from damaged heart muscle cells. Elevated levels of these markers are indicative of myocardial infarction. Choice C is the correct answer.

Choice D rationale:

Cholesterol and HDL. Rationale: Cholesterol and HDL (High-Density Lipoprotein) levels are relevant for assessing cardiovascular risk but are not specific markers for myocardial infarction. Choice D is incorrect.

A. Mast cell. B. Neutrophil. C. Macrophage. D. Lymphocyte.

Correct Answer is C

Explanation

Choice A rationale:

Mast cells are involved in the inflammatory response but are not the primary white blood cells responsible for the development of fatty streaks in atherosclerosis. Mast cells release histamines and other inflammatory mediators.

Choice B rationale:

Neutrophils are primarily responsible for fighting bacterial infections and are not the primary cells involved in atherosclerosis. While inflammation is a component of atherosclerosis, neutrophils are not the main cells responsible for the development of fatty plaques.

Choice C rationale:

Macrophages play a central role in atherosclerosis. They are responsible for engulfing oxidized LDL cholesterol in arterial walls, which then contributes to plaque formation. Macrophages play a pivotal role in the inflammatory response within the arterial walls, leading to atherosclerosis.

Choice D rationale:

Lymphocytes are involved in the immune response, but they are not the primary cells responsible for the development of fatty streaks in atherosclerosis. Lymphocytes play a role in the adaptive immune system and are not as directly involved in the early stages of atherosclerosis as macrophages.

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(1 point). Listen.A patient has orthostatic hypotension.Which activity will require close observation by the nurse? When the patient:.

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Naxlex Comprehensive Predictor Exams

(1 point). Listen.A nurse is assisting the primary care provider to determine if a patient had a myocardial infarction.Which laboratory values should the nurse check?

Correct Answer is C

Explanation

(1 point). Listen.A nurse is describing the pathophysiology of atherosclerosis.Which information should the nurse include? The main white blood cell that plays a role in the development of the fatty streak in atherosclerosis is the:.

Correct Answer is C

Explanation

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(1 point). Listen.
A patient has orthostatic hypotension.
Which activity will require close observation by the nurse? When the patient:.